mirror of
https://gitlab.freedesktop.org/wlroots/wlroots.git
synced 2026-04-13 08:22:16 -04:00
b16dd0178b
Similar to what we have already done for gles2. To simplify things we use the staging ring buffer for the vertex buffers by extending the usage bits, rather than introducing a separate pool.
21 lines
557 B
GLSL
21 lines
557 B
GLSL
#version 450
|
|
|
|
// we use a mat4 since it uses the same size as mat3 due to
|
|
// alignment. Easier to deal with (tightly-packed) mat4 though.
|
|
layout(push_constant, row_major) uniform UBO {
|
|
mat4 proj;
|
|
vec2 uv_offset;
|
|
vec2 uv_size;
|
|
} data;
|
|
|
|
layout(location = 0) in vec4 inst_rect;
|
|
|
|
layout(location = 0) out vec2 uv;
|
|
|
|
void main() {
|
|
vec2 pos = vec2(float((gl_VertexIndex + 1) & 2) * 0.5f,
|
|
float(gl_VertexIndex & 2) * 0.5f);
|
|
pos = inst_rect.xy + pos * inst_rect.zw;
|
|
uv = data.uv_offset + pos * data.uv_size;
|
|
gl_Position = data.proj * vec4(pos, 0.0, 1.0);
|
|
}
|